Plastic collapse and energy absorption of filled tubes under quasi-static loads by computational analysis

Woo, Wen Tzeng (2015) Plastic collapse and energy absorption of filled tubes under quasi-static loads by computational analysis. Universiti Malaysia Sabah. (Unpublished)

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Abstract

Over the past decades, increasing focus has been given to the impact of structures where energy needs to be absorbed during the impact in a controlled manner. This demand has led to considerable researches being carried out on studying the behaviours of energy absorbers, devices designed to dissipate energy during impact. Energy absorbers are widely used in various applications, such as aircraft, constructions, highway barriers, and vehides. Various authors have conducted researches on the different energy absorbers and modes of deformation. The deformation of tubular structures subjected to transverse loading has received relatively limited attention in the open literature. The aim of this thesis was to study the plastiC collapse and energy absorption of filled tubes under quasi-static transverse loads by means of computational analysis. Detailed finite element models, validated using experiments, were conducted to assess the plastiC collapse behaviour and energy absorption characteristics of aluminium tubes filled with polyurethane foam. Overall, the results show that foam-filled tubes were able to increase the performance in the energy absorption capadty. The results show that the energy absorption response was affected by the geometry parameters of the specimens. The diameter-to-thickness ratio and span lengths can be used as parameters to control the amount of energy absorbed.

Item Type: Academic Exercise
Uncontrolled Keywords: Diameter-to-Thickness (Dft) Ratio, Constant Span Lengths , ABAQUS
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: FACULTY > Faculty of Engineering
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 24 Jun 2016 00:33
Last Modified: 07 Nov 2017 02:38
URI: http://eprints.ums.edu.my/id/eprint/13513

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